result is wrong!

shuaiAWP 2008-10-04 02:17:42

#include <stdio.h>
#include <windows.h>
//#include <scok2.h>
#pragma comment(lib,"ws2_32.lib")
void main(int argc ,char *argv[]) {
char name[100];
wchar_t uname[100];
if(!gethostname(name,100))
printf("error");
mbstowcs(uname,name,100);
printf("hostname = %s\n",uname);
}

...全文

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zclever 2008-10-04

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使用gethostname之前要要调用WSAStartup

shuaiAWP 2008-10-04

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成功了
原来没有用WSAStartup()
正确的程序是

WORD wVersionRequested;
/*获得计算机名字
*
*
*/

#include <stdio.h>
#include <windows.h>
//#include <scok2.h>
#pragma comment(lib,"ws2_32.lib")
void main(int argc ,char *argv[]) {
WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD( 2, 2 );

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
return;
}

/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */

if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup( );
return;
}

char name[100];
//wchar_t uname[100];
if(gethostname(name,100))
{printf("error\n");
return;
} //mbstowcs(uname,name,100);
printf("hostname = %s\n",name);
}